Package org.pipecraft.infra.io

Class ThreadSafeCountingInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

org.pipecraft.infra.io.ThreadSafeCountingInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public final class ThreadSafeCountingInputStream
extends FilterInputStream

Copied from Guava's CountingInputStream. Changed the state variables to be volatile, to allow the caller of the getCount() to be from a different thread than the reader thread. So it's thread safe in the sense that we allow a single reader thread, and multiple querying threads calling getCount().

Author:

Eyal Schneider

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
ThreadSafeCountingInputStream(InputStream in)	Wraps another input stream, counting the number of bytes read.

Method Summary

Modifier and Type	Method	Description
long	getCount()	Returns the number of bytes read.
void	mark(int readlimit)
int	read()
int	read(byte[] b, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.FilterInputStream

available, close, markSupported, read

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ThreadSafeCountingInputStream

public ThreadSafeCountingInputStream(InputStream in)

Wraps another input stream, counting the number of bytes read.

Parameters:

in - the input stream to be wrapped

Method Detail

getCount

public long getCount()

Returns the number of bytes read.

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class FilterInputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class FilterInputStream

reset

public void reset()
           throws IOException

Overrides:

reset in class FilterInputStream

Throws:

IOException